Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Unit Cells01:18

Unit Cells

126
A crystal's internal structure is an orderly array of atoms, ions, or molecules, and the details of this array significantly influence the solid's properties. In a crystal, periodically repeating 'structural motifs' - which could be atoms, molecules, or groups thereof - create a 'space lattice.' This is essentially a three-dimensional, infinite array of points, each surrounded by its neighbors in an identical way, forming the basic structure of the crystal.A 'unit cell' is a theoretical...
126
The Seven Crystal Systems: Overview01:24

The Seven Crystal Systems: Overview

292
Crystals with various point group symmetries belong to different crystal classes, which are synonymous terms. Despite being in the same class, crystals may have distinct shapes, like cubes and octahedra. There are 32 three-dimensional point groups, all of which are systematically divided into seven crystal systems.The basic cubic crystal system, exemplified by NaCl, features orthogonal vectors (α = β = �� = 90°) of equal lengths (a = b = c). When specific...
292
Ionic Crystal Structures02:42

Ionic Crystal Structures

18.0K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
18.0K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

28.4K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
28.4K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

47.5K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than...
47.5K
X-ray Crystallography02:18

X-ray Crystallography

21.6K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
21.6K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Topology of dividing planar tilings: Mitosis and order in epithelial tissues.

Physical review. E·2019
Same author

Limiting shapes of confined lipid vesicles.

Soft matter·2019
Same author

Structure formation in soft nanocolloids: liquid-drop model.

Soft matter·2018
Same author

Phase diagram of elastic spheres.

Soft matter·2017
Same author

Clinical significance of dual-energy CT-derived iodine quantification in the diagnosis of metastatic LN in colorectal cancer.

European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology·2015
Same author

Composite contact of binary lipid membranes.

The European physical journal. E, Soft matter·2013
Same journal

Daily briefing: 'Cyborg' cockroaches breathe underwater with printed suit.

Nature·2026
Same journal

China boosts prestigious grants for young scientists - will it ease competition?

Nature·2026
Same journal

Incoming US science academy chief vows to 'double down' on research.

Nature·2026
Same journal

Author Correction: Synthesis of enantioenriched atropisomers by biocatalytic deracemization.

Nature·2026
Same journal

Electrodeposited self-assembled molecules for perovskite photovoltaics.

Nature·2026
Same journal

Neutrino's nursery found: the 'Shadow Blaster'.

Nature·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: May 3, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.2K

Mosaico de cuasicristales a dos escalas de longitud en el mosaico.

T Dotera1, T Oshiro1, P Ziherl2

  • 1Department of Physics, Kinki University, 3-4-1 Kowakae, Higashi-Osaka 577-8502, Japan.

Nature
|February 4, 2014
PubMed
Resumen
Este resumen es generado por máquina.

Los sistemas de materia blanda pueden formar cuasicristales a través de un mecanismo de ensamblaje genérico. Este estudio revela cómo las interacciones específicas de partículas y la geometría local impulsan el orden casi cristalino en materiales blandos, lo que permite nuevas aplicaciones.

Más Videos Relacionados

Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
10:25

Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid

Published on: December 20, 2016

20.8K
Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
10:35

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

11.2K

Videos de Experimentos Relacionados

Last Updated: May 3, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.2K
Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
10:25

Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid

Published on: December 20, 2016

20.8K
Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
10:35

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

11.2K

Área de la Ciencia:

  • Física de la materia blanda Física de la materia blanda
  • Ciencia de los materiales Ciencia de los materiales.
  • La cristalografía es una técnica de cristalografía.

Sus antecedentes:

  • El orden cuasicristalino se ha observado en diversos sistemas de materia blanda como micelas y fundidos de polímeros.
  • Se cree que el mecanismo de formación es genérico, independiente de las composiciones químicas específicas.
  • La suavidad micelar es un factor clave propuesto para inducir el orden cuasicristalino.

Objetivo del estudio:

  • Para explorar teóricamente el vínculo entre la suavidad micelar y el orden cuasicristalino.
  • Investigar el papel de la geometría de embalaje local en la formación de cuasicristales de materia blanda.
  • Identificar aplicaciones potenciales para las estructuras autoensambladas cuasicristalinas.

Principales métodos:

  • Modelado teórico de discos duros bidimensionales con repulsión de hombro cuadrado tipo escalón.
  • Simulación de las interacciones de partículas que imitan micelas macromoleculares blandas.
  • Análisis del orden de orientación de los enlaces y los mosaicos geométricos resultantes.

Principales resultados:

  • Se identificaron fases casicristalinas con orden de orientación de enlaces de 10, 12, 18 y 24 veces.
  • Formación observada de mosaicos triangulares equiláteros e isósceles desde el núcleo al núcleo y los arreglos de hombro a hombro.
  • Demostró que la geometría de embalaje local es crucial para generar cuasicristalinidad en la materia blanda.

Conclusiones:

  • La suavidad y la geometría de embalaje local son fundamentales para la formación de cuasicristales en la materia blanda.
  • Los hallazgos complementan las teorías existentes sobre la formación de cuasicristales en sistemas duros.
  • Los mosaicos casi cristalinos tienen aplicaciones potenciales en áreas como la reproducción de imágenes y materiales fotónicos.